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SF patch #1062279: deque pickling problems

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(Contributed by Dima Dorfman.)

* Support pickling of dictionaries in instances of deque subclasses.
* Support pickling of recursive deques.
This commit is contained in:
Raymond Hettinger 2004-11-09 07:27:35 +00:00
parent 15056a5202
commit 952f8808b2
2 changed files with 48 additions and 14 deletions
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22
Modules/collectionsmodule.c
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@ -550,19 +550,21 @@ PyDoc_STRVAR(copy_doc, "Return a shallow copy of a deque.");
static PyObject *
deque_reduce(dequeobject *deque)
{
PyObject *seq, *args, *result;
PyObject *dict, *result, *it;
seq = PySequence_Tuple((PyObject *)deque);
if (seq == NULL)
return NULL;
args = PyTuple_Pack(1, seq);
if (args == NULL) {
Py_DECREF(seq);
dict = PyObject_GetAttrString((PyObject *)deque, "__dict__");
if (dict == NULL) {
PyErr_Clear();
dict = Py_None;
Py_INCREF(dict);
}
it = PyObject_GetIter((PyObject *)deque);
if (it == NULL) {
Py_DECREF(dict);
return NULL;
}
result = PyTuple_Pack(2, deque->ob_type, args);
Py_DECREF(seq);
Py_DECREF(args);
result = Py_BuildValue("O()ON", deque->ob_type, dict, it);
Py_DECREF(dict);
return result;
}